Duplex envelope



J. SAWDON DUPLEX ENVELOPE' sept. 1s 1924.

Filed nec. 22, 1921 ATTACH POSTAGE -l|xl||| lll IIII lllll Illl Fl RST j wss" POSTAGE 7, F. l L

atented Sept. 16, 1924.

JOSEPH SAWDON, 0F QUINCY, ILLINOIS.

DUPLEX ENVELOPE.

Application led December 22, 1921. Serial No. 524,102.

This Ainvention relates to duplex enve' lopes in general, but more particularly to those having a small compartment located 'on the iront or face of the envelope as a Whole, so that iirst class mail matter can be sealed up in the small compartment, and whereby ower class mail matter can be left unsealed in the larger compartment, with the postage separately applied to each compartment, and with a single address on the small compartment for the entire envelope.

Generally stated, the object of the invention is to provide a novel and improved construction whereby a sheet of paper which is inserted within the envelope to form the small compartment is held in place by an inner flap formed from the material of the front wall of the envelope, thus obviating the necessity of employing a separate-strip of pa r to hold said inner wall in place, as wille hereinafter more fully appear.

It is also an object toi provide certain de- 4 ytails tending to 'increase the general eii'- ciency and the desirability of a two class duplex envelope of this particular character.

To these and other useful ends the invention consists in matters hereinafter set forth and claimed and shown in the ao companyin drawings in which- Figure 1 is a frontv elevation of a duplex envelope involving the principles of the invention.

Figure 2 is a vertical section on line 2-2 in Figure 1. v

Figure 3 is a vertical section on line 3-3 in Figure 2.

Figure 4 is a horizontal section on lme 4--4 in Figure 3.

As thus illustrated, the invention comprises a relatively large rectangular compartment l formed'between the front and "rear walls 2 and 3A ofthe envelope. A

smaller rectangular compartment 4 is formed between the front wall 2 .and the inner wall 5 of the envelope. Said outer wall 2 is provided with an opening 6 formedv by cutting the paper along the line 7, so that an inner flap 8 is rovided inside the envelope. The wall 5 its upper portion secured to the outer surface ofthe flap 8 and has its end portions 9 secured to the inner surface `of the wall 2, so that a pocket is formed into which first class mail matter may be placed through the opening 6 previously mentioned. The wall 5 has vits upper portion formed with ak sealing flap l0 which hangs down below the flap 8, and which has its inner surface provided with an adhesive for attachment to the outer surface of the envelope to seal the first class mail in the smalle/r compartment. The larger compartment is left open for the inspection of the second class or other lower class mail matter enclosed therein. A place 11 is provided on the sealing flap l() for postage for the smaller compartment, and a place 12 is provided on the envelope for postage for the larger compartment, so that the postage is y Separately applied, to the two kinds of mail matter.y A place 13 is provided on the front of the envelope below the flap 10 for: a single address for the entire envelope. Also, as shown, a place 14 is provided on the envelope 'for a return notice or address in the usual manner. Preferably, the smaller compartment is outlined on the Vfront of the envelope by line 15, asshown, or inv any suitable manner, this bein especially desirable when the entire enve ope is'made of one kind of paper, or paper of one shade or color, as in that event the'dark line 15 so conspicuously outlines the smaller compartment that the two only two pieces of paper, the formation of' flap 8 obviating the necessity of using a separate strip of pa er to fasten the Wall 5` at its upper edge, t e flap 8 being of suf- `icient area to provide a surface to which said inner wall 5 can be glued or otherwise secured.4 It will beunderstood, of course, that while the Hap 8 is shown as having a straight lower edge and rounded ends or corners it can be of any suitable or desired form or shape, and in an event the iiap 10 extends downward a stance to overlap the wall 4 below the edge 7' formed by cutting .the opening in the front of the en*- velope. It will also bek understood, of course, that by front or. face of the envelope is meant the side upon which .the address and the postage are applied, regardless of 'larger plece,

the construction of the envelope, and regardless of whether the seams of the envelope, formed in the usual or any suitable manner,'are located on the frontl or back of the envelope.

It will be seen that the inner surface of the section or smaller piece of paper 5 faces the outer wall 2 of the envelope, while the outside surface of this section or piece of paper 5 faces the wall 3 of the larger compartment. It follows,v therefore, that a portion of the outside surface of the sec# tion 5 is secured at 8 to the outer surface of the larger piece of paper from which the body' of the envelope is made. This results in forming a loose flap 10 which can thereafter be employed for sealing the smaller' compartment on Vthe address side of the envelope.

What l claim as my invention is 1; In a duplex envelope for two kinds of mail matter, a wall forming the outer surface of the envelope and provided withv an opening therein formed by cutting the material in a manner to form a flap, an inner wall extending over the-surface of said flap and secured thereto, so that' said wall is secured in place inside of the envelope, and an outer iap integral with said innerv wall and extending over said opening, whereby the envelope has two compartments, with a place for postage on the address side oi-the envelope for each compartment, so that postage maybe applied separately to each compartment, and a place below the outer tdap for a single address for| the entire envelope.

2. A duplex envelope as specified in claim 1, said inner wall having opposite end portions which lare securedto the inner surface of the envelope outer wall, substantially as shown and described.

3. A duplex envelope as specified in claim l, said outer sealing flap having its lower edge disposed a distance below the lower edge of said inner flap when said opening is sealed. I v

4. A duplex envelope as'specied in claim l, one compartment. bein for rst class mail matter and being sma er than -the othercompartment which is left unsealed, and means for outlining the smaller compartment on the front of the envelope, so that the two class character of the envelope is obvious at a glance.

5. 'lhe improved'duplex envelope comprising only two pieces of paper, the smaller piece forming a smaller com artment inside the larger `compartiment ormed by the with the outside surface ol the upper portion oi said smaller piece secured to the outer surface of the larger piece, forming a loose :Hap for sealing the small compartment on the address side of the envelope, and with other portions oit the neoaeie smaller piece secured to the er surface of the larger piece.

6. ln a duplex envelope for two kinds of mail matter, a wall forming the outer surface o the envelope and provided with an opening therein formed by cutting the material in a manner to lterm a dap, an inner wall extending over the outer surface or said flap and secured thereto, so that said wall is secured in place inside of the en-l velope, and a sealing Hap integral with said inner wall and provided with adhesive for closing said opening, whereby the envelope has two compartments, with a place for separate postage on the front of the envelope for each compartment, and a lace below the sealing Hap for a single ad ress for the entire envelope.

7. ln 'a duplex envelope for two lrinds of mail matter, a wall forming the outer surface ot the envelope and provided with an opening therein formed by cutting the material in a'manner to form a llap, an inner wall extending over the surface ot said dap and secured thereto, so that said wall is secured in place inside of the envelope, and a sealing flap integral with said inner wall and provided with adhesive for closing said opening, whereby the envelope has two compartments, with a place for separate postage on the front of the envelope for each comartment, and a place below the sealing dap or a single address for the entire envelope, said inner wallhaving opposite end portions which are secured to the inner surface ot the envelopeouter wall, substantially as shown and described.

8. ln` a duplex envelope for two hinds of mail matter, a wall org the outer surface or the envelope and provided with an opening therein toed by cutting the material in a manner to .torna a dap, an er wall extendin over the surface or said dep and secured t ereto, so that said wall is secured in place inside of the envelope, and a sealing Hap integral with said inner wall and provided with esive for closing said opening, whereby the envelope has two conapartments, with a lace tor separate postage on the iront or the envelope for each compartment, and a place below the sealing dap for a single address for the entire envelope, said outer sealing dap having its lower edge disposed a distance lbelow the lower i ont said er dep when said opening is sealed.

9. ln a duplex envelope for two kinds or mail matter, a wall forming the outer surlace or" the envelope and provided with an opening therein formed by cutting the inaterial in amanner to form a dep, an inner wall extending over the surface et said ldap and secured thereto, so that said wall is secured in place inside ot the envelope, and a sea-ling .Hap integral with said inner lll@ and lprovided with adhesive for closing said matter and being smaller than the other compartment which is left unsealed, and means or outlinin @the smaller com rtment `on the front o the envelope, so t at'the two class charaeter ofthe Aenvelope is obvious at a glance.

for two kinds 10. Ina dliplex envelcpe of mail matter, a wall orming the outer surface of the envelpe and provided with an opening therein ormed by cutting the material in a manner to form a flap,'an inner wall extending over the outer surface of said iap and secured thereto, so that said wall is secured in glace inside of the envelope, and a sealing a integral with said inner wall and provi ed with adhesive for closing said opening, whereby the envelope has two com artments, with space for postage on the a dress side'of -the envelope, and a glace below the sealing flap for a single ad ress for the entire envelope.

JOSEPH SAWDON. 

